Broiler-gridiron.



G. W.- SHIELDS. BROILER GRIDIEON. APPLIOATIOHFILED AUG. 2a, 1909.

Patented Jan. 24, 1911'.

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m mmqum m m CURTIS W. SHIELDS, OF NEW YORK, N. Y.

BROILER-GRIDIRON.

Specification of Letters Patent.

Patented Jan. 24, 1911.

Application filed August 28, 1909. Serial No. 515,031.

To all whom it may concern:

Be 'it known that I, CURTIS W. SHIELDS, a citizen of the United States, residing at 11 Hampton Place, Brooklyn, New York, county of Kings, and State of New York, have invented certain new and useful Improvements in Broiler-Gridirons, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

It is well known that the grid-bars in a broiler, which are subjected to a higher heat than the frame of the broiler, are liable by reason of the expansion, to buckle and thus overstrain the connections with the broilerframe; and the present improvements relate to a special means for preventing the buckling or bending of the grid-bars, and also to a special construction of the broiler-frame and its connections with a track upon which the broiler can be supported movably over the fire.

The prevention of the grid -bars from buckling is effected by securing them rigidly to only one end of the broiler-frame, and extending the other ends of the grid-bars loosely through the holes in the opposite end of the frame, so that they can expandand contract without resistance.

To form durable sup-ports upon the broilerframe for wheels to fit a track over the fire, I fit supplemental frame bars within the sides of the broiler-frame and pivot the wheels between the side-bars and such supplemental-bars. The support of the pivots at both ends thus holds the wheels durably in place, and enables the pivots to resist bending when the wheels are subjected to blows or concussions, as is common in handling a broiler.

Other details of construction will be understood by reference to the annexed drawing, in which- Figure 1 is a plan of the broiler with portion of the track-bars, which in practice are made on a frame supported over the fire. Fig. 2 is a cross section on line 22 in Fig. 1; Fig. 3 shows the nearer end of the broiler as represented in Fig. 1, and Fig. 4: shows the farther end, the track-bars being shown in sec tion in both Figs. 3 and 4. Fig. 5 is a detached view of the frame'bar a. Fig. 6 is a plan of the broiler frame with a keeper to secure the grid-bars; Fig. 7 is an elevation of the keeper; Fig. 8 isa side view of the grid-bars notched near one end; Fig. 9 is a section through the said notch; Fig. 10 shows an alternative fastening for the detachable grid-bars, Fig. 11 shows the side of a grid-bar, with-threaded stem, and Fig. 12 shows the end of such grid-bar.

In Figs. 1 to 5, a designates the end-bar of the broiler, which is formed integral with the side bars I), b; the opposite end bar a having tenons 0 upon the ends, as shown in Fig. 5, which are riveted in mortises c in the side-bars. Mortises (l are formed in the end-bars a, a, adjacent to the side bars d, d, and supplemental-bars c are formed with tenons e upon the ends, which are riveted 1n such mortises. The side frame bars and supplemental bars are formed with corresponding holes f to receive the rivets 9, upon which wheels h are mounted to rest upon the track bars 2'. The supplemental bars 6 are riveted to the bars a, a, before the tenons upon the latter are secured in the side bars I), b. The ends of these side bars project beyond the end bar a. sufficiently to attach the feet j of hooks in which project below the bottoms of the wheels h to engage the edges of the track bars '5.

The grid-bars Z are made of oval form and of greater depth than width, to secure the necessary stiffness and the greatest open space between the bars. In Figs. 1 and 2 they are shouldered at one end and the tenon squared and riveted in holes on in the frame bar a, but their opposite ends extend loosely through holes a in the frame bar a, which are made a little larger than the grid-bars, as is clearly shown in Figs. 4%. and 5, thus permitting the grid-bars to expand freely, although firmly connected with the frame-bar a. The squared tenons prevent the bars from twisting if the riveted end becomes loosened.

If secured rigidly in the frame bar a as in Fig. 1 the grid-bars cannot readily be renewed but Figs. 6 to 12 show means for fastening the grid bars detachably in the frame, so that they can readily be removed and replaced with new ones: and the durability of the boiler thus becomes greatly increased. Figs. 6 to 8 show the frame, made at both ends with holes through which the body of the grid bars can be passed and each bar has notches 0 in its sides outside the bar a, and a lock-plate 79 having transverse slots 9 fitted to such notches is secured detachably upon the frame-bar a by bolts 1" and operates to hold all the grid-bars relnovably in place. Two of the bolts also hold the handle 8 upon the bar a. In Fig. 10 the bar a is made with small round holes and each grid-bar is formed with a threaded shank t at one end to fit such holes and with a shoulder a that is drawn against the inner side of the frame-bar a by a nut 0 screwed on the shank.

I claim 1. A rectangular broiler having an endbar a and side-bars Z), Z) formed in one piece, with mortises near the ends of the side bars, an opposite end-bar at, having clearance-holes n for grid-bars, and tenons secured in the said mortises, and grid-bars secured detachably to the frame-bar a and separately removable and projected loosely through the clearance-holes in the bar a.

2. A rectangular broiler having an end bar cc and side-bars b, 1) formed in one piece, with mortises near the ends of the side-bars, an opposite end-bar (2, having clearance-holes n for grid-bars and tenons secured in the said mortises, grid-bars secured to the bar a and projected through the holes a, and supplen'iental-bars a, 0' secured to the end-bars within the side-bars, and wheels it journaled between the sidebars and supplemental-bars to fit upon track-bars.

3. A broiler having a rectangular frame with holes in its opposite end-bars for the passage of grid-bars, a keeper or lock-plate with smaller slot holes secured detachably to one of the end-bars, and grid-bars necked to fit the slot-holes in the keeper, and held detachably in the frame-bars thereby.

l. A broiler having a rectangular frame with end-bars a, a, and side bars I), 6, gridbars extended between the end-bars, and supplemental bars 0, 0, secured to the endbars within the side-bars, with wheels 72, journaled bet-ween the side-bars and supplemental-bars to fit upon track-bars.

5. A rectangular broiler having the sidebars and one end-bar formed in one piece,.

with opposite end-bar secured in the said sidebars, grid-bars extended between the end-bars, supplemental-bars c, c, secured to the end-bars within the side-bars and wheels h journaled between the side-bars and the supplemental-bars for the purpose set forth.

6. A rectangular broller havlng the sidebars and one end bar formed in one piece,

with opposite end-bar secured in said side CURTIS W. SHIELD S.

Witnesses ARTHUR L. MARIM, LoUIs H. LINDEMAN. 

